To use the Udemy coupons on their website, you need to meet the conditions:

•  The items you choose must meet all coupon requirements as explained in the Terms and Conditions.

• The coupon has not expired. 

• The seller uses the Udemy checkout system or a customized checkout system that accepts the coupon.

It depends! Normally, the percentage that you can save with that Udemy Coupon will be shown right on the page, so you can see if it is applied sitewide or not. However, once you are not sure, try it right on their's products you want to buy.

Yes. Coupons for each Discount Event of Udemy will be collected here while being updated day by day. Sometimes, there will be deals not updated promptly but it's rare, we expect sympathy from you. 

Our advice for you to use Udemy Coupon effectively is to choose the right day.
Like thousands of other consumers, the time of promotion is when they choose to
shop at Udemy, so take advantage of coupons released on those days to save.